You are viewing a plain text version of this content. The canonical link for it is here.
Posted to notifications@accumulo.apache.org by "Josh Elser (JIRA)" <ji...@apache.org> on 2015/12/09 18:01:11 UTC
[jira] [Resolved] (ACCUMULO-4060) Transient ZooKeeper connection
issues kills FATE Runner threads
[ https://issues.apache.org/jira/browse/ACCUMULO-4060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Josh Elser resolved ACCUMULO-4060.
----------------------------------
Resolution: Fixed
> Transient ZooKeeper connection issues kills FATE Runner threads
> ---------------------------------------------------------------
>
> Key: ACCUMULO-4060
> URL: https://issues.apache.org/jira/browse/ACCUMULO-4060
> Project: Accumulo
> Issue Type: Bug
> Components: fate, master
> Affects Versions: 1.6.4, 1.7.0
> Reporter: Josh Elser
> Assignee: Josh Elser
> Fix For: 1.6.5, 1.7.1, 1.8.0
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> Noticed this the following on a 6 node Accumulo cluster with Kerberos and quality of protection set to auth-conf (wire encryption). The cluster appeared to be up and running -- healthy. Attempts to create a table via the shell was hung in the CreateTableCommand, polling on the FATE operation. After a few minutes, it made no progress.
> Inspecting the FATE transactions showed that there were (multiple) FATE ops running, but none where locked or locking any tables, nor making any progress.
> This lead me to inspect the Master's log to figure out why it wasn't making any progress, and, to my joy, I found the following:
> {noformat}
> 2015-11-18 23:18:30,784 [fate.Fate] ERROR: Thread "Repo runner 0" died org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /accumulo/a1af6ffa-720b-4ec3-8198-5891010294a5/fate
> java.lang.RuntimeException: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /accumulo/a1af6ffa-720b-4ec3-8198-5891010294a5/fate
> at org.apache.accumulo.fate.ZooStore.reserve(ZooStore.java:189)
> at org.apache.accumulo.fate.AgeOffStore.reserve(AgeOffStore.java:158)
> at org.apache.accumulo.fate.Fate$TransactionRunner.run(Fate.java:60)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /accumulo/a1af6ffa-720b-4ec3-8198-5891010294a5/fate
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1472)
> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1500)
> at org.apache.accumulo.fate.zookeeper.ZooReader.getChildren(ZooReader.java:151)
> at org.apache.accumulo.fate.ZooStore.reserve(ZooStore.java:128)
> ... 6 more
> 2015-11-18 23:18:30,783 [fate.Fate] ERROR: Thread "Repo runner 2" died org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /accumulo/a1af6ffa-720b-4ec3-8198-5891010294a5/fate
> java.lang.RuntimeException: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /accumulo/a1af6ffa-720b-4ec3-8198-5891010294a5/fate
> at org.apache.accumulo.fate.ZooStore.reserve(ZooStore.java:189)
> at org.apache.accumulo.fate.AgeOffStore.reserve(AgeOffStore.java:158)
> at org.apache.accumulo.fate.Fate$TransactionRunner.run(Fate.java:60)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /accumulo/a1af6ffa-720b-4ec3-8198-5891010294a5/fate
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1472)
> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1500)
> at org.apache.accumulo.fate.zookeeper.ZooReader.getChildren(ZooReader.java:151)
> at org.apache.accumulo.fate.ZooStore.reserve(ZooStore.java:128)
> ... 6 more
> 2015-11-18 23:18:30,787 [fate.Fate] ERROR: Thread "Repo runner 1" died org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /accumulo/a1af6ffa-720b-4ec3-8198-5891010294a5/fate
> java.lang.RuntimeException: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /accumulo/a1af6ffa-720b-4ec3-8198-5891010294a5/fate
> at org.apache.accumulo.fate.ZooStore.reserve(ZooStore.java:189)
> at org.apache.accumulo.fate.AgeOffStore.reserve(AgeOffStore.java:158)
> at org.apache.accumulo.fate.Fate$TransactionRunner.run(Fate.java:60)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /accumulo/a1af6ffa-720b-4ec3-8198-5891010294a5/fate
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1472)
> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1500)
> at org.apache.accumulo.fate.zookeeper.ZooReader.getChildren(ZooReader.java:151)
> at org.apache.accumulo.fate.ZooStore.reserve(ZooStore.java:128)
> ... 6 more
> 2015-11-18 23:18:30,787 [fate.Fate] ERROR: Thread "Repo runner 3" died org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /accumulo/a1af6ffa-720b-4ec3-8198-5891010294a5/fate
> java.lang.RuntimeException: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /accumulo/a1af6ffa-720b-4ec3-8198-5891010294a5/fate
> at org.apache.accumulo.fate.ZooStore.reserve(ZooStore.java:189)
> at org.apache.accumulo.fate.AgeOffStore.reserve(AgeOffStore.java:158)
> at org.apache.accumulo.fate.Fate$TransactionRunner.run(Fate.java:60)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:35)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /accumulo/a1af6ffa-720b-4ec3-8198-5891010294a5/fate
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1472)
> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1500)
> at org.apache.accumulo.fate.zookeeper.ZooReader.getChildren(ZooReader.java:151)
> at org.apache.accumulo.fate.ZooStore.reserve(ZooStore.java:128)
> ... 6 more
> {noformat}
> This happened at the end of a ~30s period of difficulties in the Master communicating with ZooKeeper. I've yet to investigate why this pause happened, but the fact that the FATE runner threads died and the Master kept running is no good.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)